User Request

Current Body:

{
  "userId" : "abc545646545646546545"
}


Option I - Proposal:

[

  {
    "userId" : "abc545646545646546545"
  },
  {
    "userId" : "abc545646545646546545"
  },
  {
    "userId" : "abc545646545646546545"
  }
]



Option II - More simple solution (I Guess)

{
  users: 'abc545646545646546545, abc54564654564648966, kkj123132132132121'
}


Option III - Grouped by role

{
  message: 'message to send in the email',
  roles: [
    {
      roleId: 'abc545646545646546545',
      users: [
        abc545646545646546545,
        abc54564654564648966,
        kkj123132132132121
      ]
    },
    {
      roleId: 'abc545646545646546545',
      users: [
        abc545646545646546545,
        abc54564654564648966,
        kkj123132132132121
      ]
    }
  ]
}

Option IV - Grouped by role (key: value version)
This has just as as much information, but is smaller and harder to iterate over.
{
  message: 'message to send in the email',
  roles: {
    'role123457890': [
        abc545646545646546545,
        abc54564654564648966,
        kkj123132132132121
      ],
      'role123457891': [
        abc545646545646546545,
        abc54564654564648966,
        kkj123132132132121
      ]
  }
}